What is Soil?
What is soil made of?
Minerals, water & Organic matter
Soil formation begins with?
rock weathering
What is the main component of soil?
Minerals 45%
Which soil type is good for growing plants?
loamy soil
why soil is incredibly important to plants
It is their primary source of water, minerals, and nutrients.
When rocks break down, what tiny particles do they contribute to the soil?
Minerals
How many layers of soil are there?
5
What holds gases and water in the soil?
pores
Name the 4 different types of soil
Sandy, slit, clay, loamy
What is the main reason soil is so important?
plants grow in soil
We call things that are alive or once alive
Organic
No plants can enter this area
Bedrock
What is humus?
the remains of dead plants, animals, and other living things
What is loamy soil made of?
a mix of sand, silt and some clay particles
Where are you most likely to find deep, rich soil?
The bottom of a mountain
List the three types of weathering.
Chemical, physical, and biological.
This is the layer of soil that is mainly sand and clay materials and has little matter.
subsoil
True or False:
More organisms live in a single teaspoon of soil than the human population
True
Which type of soil has the smallest rock particles?
Clay soil
What is God's requirement for Israel on agriculture in the Old Testament?
God commanded, “Six years you shall sow your land and gather in its produce, but the seventh year you shall let it rest and lie fallow...
This soil is very common along the Pacific Rim.
Clay
What are the 5 layers of soil?
Humus (organic), Topsoil (Surface), Subsoil, Parent rock (substratum), Bedrock
Why soil is different from place to place? (There are 5, name at least 3)
parent material, climate, the type of organic material, topography, and time.
Why does sandy soil always appear dry?
Sandy soil has big particles, creating large spaces between them, which allow water to drain through quickly.
What are the five key functions of soil?
1. Medium for Plant Growth and Soil Fertility
2. Regulator of Water Supply
3. Recycler of Raw Materials
4. Habitat for Organisms
5. Landscaping and Engineering Medium